home
***
CD-ROM
|
disk
|
FTP
|
other
***
search
/
The Arsenal Files 6
/
The Arsenal Files 6 (Arsenal Computer).ISO
/
health
/
med9605a.zip
/
M9650291.TXT
< prev
next >
Wrap
Text File
|
1996-03-09
|
3KB
|
42 lines
Document 0291
DOCN M9650291
TI ICAM-1 is required for T cell proliferation but not for anergy or
apoptosis induced by Staphylococcus aureus enterotoxin B in vivo.
DT 9605
AU Gonzalo JA; Martinez C; Springer TA; Gutierrez-Ramos JC; Center for
Blood Research, Harvard Medical School, Boston, MA; 02115, USA.
SO Int Immunol. 1995 Oct;7(10):1691-8. Unique Identifier : AIDSLINE
MED/96128663
AB The response of T lymphocytes to superantigens requires expression of
the appropriate TCR V beta gene products as well as the establishment of
cellular interactions mediated by adhesion molecules. To study the role
of intercellular adhesion molecule (ICAM)-1 in the response in vivo to
superantigens, we have analyzed the effects induced by the bacterial
superantigen Staphylococcus aureus enterotoxin B (SEB) in mice which
have been made genetically deficient in ICAM-1. SEB treatment of
wild-type mice causes proliferation, deletion and anergy of the
SEB-reactive V beta 8+ T cell population. Here we show that cellular
interactions mediated by ICAM-1 are not essential for the induction of
anergy or for the deletion of CD4+ V beta 8+ or CD8+ V beta 8+ T cells,
but are required for the proliferation of these peripheral T
lymphocytes. This is the first demonstration in vivo that the absence of
the co-stimulatory signals provided by the interaction of ICAM-1 with
its specific ligands impairs the proliferation of SEB-reactive T cells.
Interestingly, our study showed that SEB-induced proliferation of CD8+ V
beta 8+ T cells from lymph nodes (not from spleen) is independent of the
interactions mediated by ICAM-1.
DE Animal Antigens, Bacterial/*IMMUNOLOGY Apoptosis/*PHYSIOLOGY Cell
Division/PHYSIOLOGY Cells, Cultured Clonal Anergy/*PHYSIOLOGY
Comparative Study CD4-Positive T-Lymphocytes/*IMMUNOLOGY CD8-Positive
T-Lymphocytes/*IMMUNOLOGY Enterotoxins/*IMMUNOLOGY Human
Intercellular Adhesion Molecule-1/GENETICS/*PHYSIOLOGY Lymph
Nodes/CYTOLOGY Lymphocyte Transformation/*PHYSIOLOGY Mice Mice,
Inbred C57BL Mice, Mutant Strains Organ Specificity Receptors,
Antigen, T-Cell, alpha-beta/GENETICS Specific Pathogen-Free Organisms
Spleen/CYTOLOGY Staphylococcus aureus/IMMUNOLOGY
Superantigens/*IMMUNOLOGY Support, Non-U.S. Gov't JOURNAL ARTICLE
SOURCE: National Library of Medicine. NOTICE: This material may be
protected by Copyright Law (Title 17, U.S.Code).